sbin/hammer/cmd_version.c

   1 /*
   2  * Copyright (c) 2008 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Matthew Dillon <dillon@backplane.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $DragonFly: src/sbin/hammer/cmd_version.c,v 1.2 2008/11/13 02:23:53 dillon Exp $
  35  */
  36 /*
  37  * Get and set the HAMMER filesystem version.
  38  */
  39
  40 #include "hammer.h"
  41
  42 /*
  43  * version <filesystem>
  44  */
  45 void
  46 hammer_cmd_get_version(char **av, int ac)
  47 {
  48         struct hammer_ioc_version version;
  49         char wip[16];
  50         int fd;
  51
  52         if (ac != 1)
  53                 errx(1, "hammer version - expected a single <fs> path arg");
  54         fd = open(av[0], O_RDONLY);
  55         if (fd < 0)
  56                 err(1, "hammer version: unable to access %s", av[0]);
  57
  58         /*
  59          * version.cur_version must be set to 0 to retrieve current version
  60          * info.
  61          */
  62         bzero(&version, sizeof(version));
  63         if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
  64                 err(1, "hammer version ioctl");
  65
  66         snprintf(wip, 16, "%d", version.wip_version);
  67         printf("min=%d wip=%s max=%d current=%d description=\"%s\"\n",
  68                 version.min_version,
  69                (version.wip_version > version.max_version) ? "none" : wip,
  70                 version.max_version,
  71                 version.cur_version,
  72                 version.description
  73         );
  74
  75         /*
  76          * Loop over available versions to display description.
  77          */
  78         if (QuietOpt == 0) {
  79                 version.cur_version = 1;
  80                 printf("available versions:\n");
  81                 while (ioctl(fd, HAMMERIOC_GET_VERSION, &version) == 0) {
  82                         printf("    %d\t%s\t%s\n",
  83                                 version.cur_version,
  84                                 (version.cur_version < version.wip_version ?
  85                                         "NORM" : "WIP "),
  86                                 version.description);
  87                         ++version.cur_version;
  88                 }
  89         }
  90         close(fd);
  91 }
  92
  93 /*
  94  * version-upgrade <filesystem> <version> [force]
  95  */
  96 void
  97 hammer_cmd_set_version(char **av, int ac)
  98 {
  99         struct hammer_ioc_version version;
 100         int fd;
 101         int overs;
 102         int nvers;
 103
 104         if (ac < 2 || ac > 3 || (ac == 3 && strcmp(av[2], "force") != 0))
 105                 errx(1, "hammer version-upgrade: expected <fs> vers# [force]");
 106
 107         fd = open(av[0], O_RDONLY);
 108         if (fd < 0)
 109                 err(1, "hammer version-upgrade: unable to access %s", av[0]);
 110
 111         bzero(&version, sizeof(version));
 112         if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
 113                 err(1, "hammer ioctl");
 114         overs = version.cur_version;
 115
 116         version.cur_version = strtol(av[1], NULL, 0);
 117         nvers = version.cur_version;
 118
 119         if (ioctl(fd, HAMMERIOC_GET_VERSION, &version) < 0)
 120                 err(1, "hammer ioctl");
 121         if (version.cur_version >= version.wip_version && ac != 3)
 122                 errx(1, "The requested version is a work-in-progress"
 123                         " and requires the 'force' directive");
 124
 125         if (ioctl(fd, HAMMERIOC_SET_VERSION, &version) < 0)
 126                 err(1, "hammer version-upgrade ioctl");
 127         if (version.head.error)
 128                 errx(1, "hammer version-upgrade ioctl");
 129
 130         printf("hammer version-upgrade: succeeded\n");
 131         if (overs < 3 && nvers >= 3) {
 132                 printf("NOTE!  Please run 'hammer cleanup' to convert the\n"
 133                        "<pfs>/snapshots directories to the new meta-data\n"
 134                        "format.  Once converted configuration data will\n"
 135                        "no longer resides in <pfs>/snapshots and you can\n"
 136                        "even rm -rf it entirely if you want.\n");
 137         }
 138
 139         close(fd);
 140 }
 141